﻿<!DOCTYPE html>

<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="utf-8" />
    <title></title>
</head>
<body>
<style>
    .container {
        width: 50%; /* 容器宽度 */
        margin:auto; /* 左右居中 */
        text-align: center; /* 内容居中 */
    }
</style>
<div class="container">
    <h1>我的朋友,刷新试试</h1>
</div>
<div style="display:flex; justify-content: center;">
  <img src="https://picsum.photos/200/300"  alt="Image">
</div>
</div>
<div style="display:flex; justify-content: center;">
  <img src="https://picsum.photos/300/300"  alt="Image">
</div>
</body>
</html>